M J Mulcahey1,2, Christina Calhoun Thielen3, Kathryn Dent3, Rebecca Sinko3, Cristina Sadowsky4, Rebecca Martin4, Lawrence C Vogel5, Loren Davidson6, Heather Taylor7, Jackie Bultman8, John Gaughan3. 1. Thomas Jefferson University, Philadelphia, PA, USA. maryjane.mulcahey@jefferson.edu. 2. Shriners Hospitals for Children, Philadelphia, PA, USA. maryjane.mulcahey@jefferson.edu. 3. Thomas Jefferson University, Philadelphia, PA, USA. 4. Kennedy Krieger Rehabilitation Institute, Baltimore, MD, USA. 5. Shriners Hospitals for Children, Chicago, IL, USA. 6. Shriners Hospitals for Children, Sacramento, CA, USA. 7. TIRR Herman Memorial, Houston, TX, USA. 8. Mary Free Bed Rehabilitation Hospital, Grand Rapids, MI, USA.
Abstract
STUDY DESIGN: Psychometric study. OBJECTIVE: To validate the GRASSP in pediatric SCI populations and establish the lower age of test administration. SETTING: United States: Pennsylvania, Maryland, Illinois, Michigan, California, Texas. METHODS: Mean, SD and range of scores were calculated and examined for known-group differences. Test-retest reliability was measured by the intra-class correlation, concurrent validity of the GRASSP against the SCIM, SCIM-SS, and the CUE-Q was measured by the Spearman correlation. RESULTS: GRASSP scores differed between participants with motor complete and incomplete injuries (p = <0.0001-0.036). Test-retest reliability was strong (ICC = 0.99). Weak correlation with the total SCIM (r = 0.33-0.66), and moderate to strong correlation with the SCIM-SC (r = 37-0.70) and CUE-Q (r = 0.40-0.84). CONCLUSION: Results support the validity of the GRASSP and provide evidence that the scores are reliable when administered to children. The GRASSP sensory and strength subtests are recommended for children beginning at 6 years of age, and the GRASSP prehension performance/ability subtest for children beginning at 8 years of age. Normative data are needed for the performance components of the GRASSP.
STUDY DESIGN: Psychometric study. OBJECTIVE: To validate the GRASSP in pediatric SCI populations and establish the lower age of test administration. SETTING: United States: Pennsylvania, Maryland, Illinois, Michigan, California, Texas. METHODS: Mean, SD and range of scores were calculated and examined for known-group differences. Test-retest reliability was measured by the intra-class correlation, concurrent validity of the GRASSP against the SCIM, SCIM-SS, and the CUE-Q was measured by the Spearman correlation. RESULTS: GRASSP scores differed between participants with motor complete and incomplete injuries (p = <0.0001-0.036). Test-retest reliability was strong (ICC = 0.99). Weak correlation with the total SCIM (r = 0.33-0.66), and moderate to strong correlation with the SCIM-SC (r = 37-0.70) and CUE-Q (r = 0.40-0.84). CONCLUSION: Results support the validity of the GRASSP and provide evidence that the scores are reliable when administered to children. The GRASSP sensory and strength subtests are recommended for children beginning at 6 years of age, and the GRASSP prehension performance/ability subtest for children beginning at 8 years of age. Normative data are needed for the performance components of the GRASSP.
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